package com.siss.tenancy.user.utils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;


/**
 * <p>类名: CopyFileUtils</p>
 * <p>描述:TODO</p>
 * <p>创建人: liyp</p>
 * <p>创建时间: 2018/11/14 9:30</p>
 * <p>@version 2.0  </p>
 * <p>修改内容: ......</p>
 * <p>修改说明: ......</p>
 * <p>修改时间: ......</p>
 * <p>修改人: ......</p>
 * <p>每次修改，请增加上述修改信息说明</>
 */
public class CopyFileUtils {
    Logger logger = LoggerFactory.getLogger(CopyFileUtils.class);

    public static boolean copyUrlPic(String urlStr,String filePath){
        try{
            URL url = new URL(urlStr);
            //打开链接
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            //设置请求方式为"GET"
            conn.setRequestMethod("GET");
            //超时响应时间为5秒
            conn.setConnectTimeout(5 * 1000);
            //通过输入流获取图片数据
            InputStream inStream = conn.getInputStream();
            //得到图片的二进制数据，以二进制封装得到数据，具有通用性
            byte[] data = readInputStream(inStream);
            //new一个文件对象用来保存图片，默认保存当前工程根目录
            File imageFile = new File(filePath);
            //创建输出流
            FileOutputStream outStream = new FileOutputStream(imageFile);
            //写入数据
            outStream.write(data);
            //关闭输出流
            outStream.close();
            return true;
        }catch(Exception e){
            e.printStackTrace();
            return false;
        }
    }


    public static byte[] readInputStream(InputStream inStream) throws Exception{
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        //创建一个Buffer字符串
        byte[] buffer = new byte[1024];
        //每次读取的字符串长度，如果为-1，代表全部读取完毕
        int len = 0;
        //使用一个输入流从buffer里把数据读取出来
        while( (len=inStream.read(buffer)) != -1 ){
            //用输出流往buffer里写入数据，中间参数代表从哪个位置开始读，len代表读取的长度
            outStream.write(buffer, 0, len);
        }
        //关闭输入流
        inStream.close();
        //把outStream里的数据写入内存
        return outStream.toByteArray();
    }

    public static void copyFile(String src,String target)
    {
        File srcFile = new File(src);
        File targetFile = new File(target);
        try {
            InputStream in = new FileInputStream(srcFile);
            OutputStream out = new FileOutputStream(targetFile);
            byte[] bytes = new byte[1024];
            int len = -1;
            while((len=in.read(bytes))!=-1)
            {
                out.write(bytes, 0, len);
            }
            in.close();
            out.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("文件复制成功");


    }
}
